Flue gas desulfurization system of coke oven ground dust removal station
By introducing the primary desulfurization zone and refined desulfurization mechanism into the flue gas desulfurization system of the coke oven ground dust removal station, and using structures such as rotary powder spray pipes and blades to ensure that the desulfurization agent and the flue gas are in full and uniform contact, solving the problem of poor desulfurization effect in the existing devices, and achieving complete desulfurization and compliance with the standards of flue gas.
Patent Information
- Application Number
- CN202422726907.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-08
- Publication Date
- 2025-08-01
- Estimated Expiration
- 2034-11-08
AI Technical Summary
The existing flue gas desulfurization device of coke oven floor dust removal station has insufficient contact with the desulfurization liquid and flue gas, small and uneven contact area, resulting in poor desulfurization effect and inability to meet the emission standards.
The initial desulfurization zone and the refined desulfurization mechanism were designed, and the rotating powder spraying pipe and rotatable blades were used to ensure that the desulfurization agent and the flue gas were in full and uniform contact. Combined with the flue gas uniform distribution pipe and the inverted U-shaped flue gas delivery pipe, the contact area and contact uniformity were increased, and the flow stabilization plate and rotary shaft blades were used to improve the reaction efficiency.
The complete removal of sulfur-containing substances such as SO2 and SO3 in the flue gas on the ground dust removal station of the coke oven is achieved, ensuring that the flue gas meets the standards and improving the desulfurization efficiency and effect.
Smart Images
Figure CN223170657U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of flue gas treatment equipment, in particular to a flue gas desulfurization system for a coke oven ground dust removal station. Background Art
[0002] Coke ovens in coking plants generate large amounts of high-temperature, intermittent smoke during the coal loading and coke discharge processes. If this smoke is not captured and treated, it can cause serious environmental and air pollution. Currently, most coking plants utilize coke oven floor dust removal stations to capture and purify the flue gas generated during these processes. These stations not only remove impurities such as pulverized coal, tar, and dust, but also pollutants such as SO2 and SO3. Existing flue gas desulfurization systems in these stations suffer from the following issues: ① Insufficient contact between the desulfurization liquid and the flue gas results in poor desulfurization effectiveness; ② The desulfurizer has a small, incomplete, and uneven contact area with the flue gas, resulting in poor desulfurization effectiveness and substandard flue gas emissions. Therefore, a flue gas desulfurization system for coke oven floor dust removal stations is being developed that delivers effective desulfurization and ensures standard flue gas emissions. Utility Model Content
[0003] The utility model aims to provide a flue gas desulfurization system for a coke oven ground dust removal station, which has good desulfurization effect, can meet the emission standards of flue gas and is easy to implement.
[0004] The purpose of the utility model is achieved in this way. The utility model includes a flue gas conveying pipeline, a primary desulfurization zone and a fine desulfurization mechanism, the primary desulfurization zone and the fine desulfurization mechanism are arranged in sequence along the flue gas flow direction, the primary desulfurization zone is arranged in the flue gas conveying pipeline, the primary desulfurization zone is sequentially provided with a desulfurizer conveying pipeline and a flow stabilizer in the flue gas flow direction, a fan is provided on the desulfurizer conveying pipeline, the end of the desulfurizer conveying pipeline extends into the flue gas conveying pipeline, the end of the desulfurizer conveying pipeline is rotatably connected to a rotary powder spraying pipe through a rotary joint, the rotary powder spraying pipe is provided with a nozzle, the center position of the flow stabilizer is rotatably provided with a rotating shaft, and blades are installed on the rotating shaft;
[0005] The fine desulfurization mechanism includes a flue gas conveying pipe, an inverted U-shaped flue gas conveying pipe and a fine desulfurization tank. The inverted U-shaped flue gas conveying pipe is arranged inside the fine desulfurization tank. One end of the inverted U-shaped flue gas conveying pipe is connected to the flue gas conveying pipe, and the other end of the inverted U-shaped flue gas conveying pipe extends to the bottom of the fine desulfurization tank. A drain pipe is provided at the bottom of the fine desulfurization tank, and a sealing cover is provided at the top of the fine desulfurization tank. A liquid inlet pipe and an exhaust pipe are provided on the sealing cover. The interior of the fine desulfurization tank is filled with desulfurization liquid.
[0006] Furthermore, a liquid level gauge is provided on the fine desulfurization tank for monitoring the liquid level of the desulfurization liquid.
[0007] Further, a liquid inlet pipe control valve is arranged on the liquid inlet pipe.
[0008] Further, one end of the inverted U-shaped flue gas conveying pipe extending to the bottom of the fine desulfurization tank is provided with a flue gas distribution pipe, and a plurality of flue gas outlet holes are formed in the flue gas distribution pipe.
[0009] Further, 2 to 10 flue gas distribution pipes are evenly distributed outward with the center of the cross-section of the inverted U-shaped flue gas conveying pipe as the center.
[0010] Further, the height of the inverted U-shaped flue gas conveying pipe is higher than the liquid level height of the desulfurization liquid.
[0011] The utility model simultaneously sets an initial desulfurization area and a fine desulfurization mechanism, so that sulfur-containing substances such as SO2 and SO3 in the flue gas of the coke oven ground dust removal station can be completely removed, ensuring the desulfurization effect and enabling the flue gas of the coke oven ground dust removal station to meet the emission standards; the setting of the rotary powder spraying pipe and the rotatable blades in the utility model enables the fine desulfurizer powder to be in full and uniform contact with the flue gas, ensuring the flue gas desulfurization effect. The setting of the flue gas distribution pipe enables the flue gas to be in full and uniform contact with the desulfurization liquid, not only improving the efficiency of flue gas desulfurization, but also further ensuring the flue gas desulfurization effect. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 is a schematic diagram of the overall structure of the utility model;
[0013] Figure 2 is a schematic diagram of the structure of the initial desulfurization area 4;
[0014] Figure 3 is a schematic diagram of the structure of the flue gas distribution pipe 51.
[0015] In the figure: 1 - flue gas conveying pipeline, 2 - desulfurizer conveying pipeline, 3 - fan, 4 - initial desulfurization area, 5 - inverted U-shaped flue gas conveying pipe, 51 - flue gas distribution pipe, 52 - flue gas outlet hole, 6 - liquid level gauge, 7 - sealing cover, 8 - liquid inlet pipe, 9 - liquid inlet pipe control valve, 10 - exhaust pipe, 11 - desulfurization liquid, 12 - fine desulfurization tank, 13 - drain pipe, 14 - rotating joint, 15 - rotary powder spraying pipe, 16 - nozzle, 17 - blade, 18 - flow stabilizing plate, 19 - rotating shaft. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0016] The following further describes the present utility model with reference to the drawings, but does not limit the present utility model in any way. Any change or improvement made based on the teachings of the present utility model falls within the protection scope of the present utility model.
[0017] As Figures 1 to 3As shown in the figure, the utility model includes a flue gas conveying pipeline 1, a primary desulfurization area 4 and a fine desulfurization mechanism. The primary desulfurization area 4 and the fine desulfurization mechanism are arranged in sequence along the flue gas flow direction. The primary desulfurization area 4 is arranged inside the flue gas conveying pipeline 1. Along the flue gas flow direction, a desulfurizing agent conveying pipeline 2 and a flow stabilizer plate 18 are arranged in sequence in the primary desulfurization area 4. A blower 3 is arranged on the desulfurizing agent conveying pipeline 2. The end of the desulfurizing agent conveying pipeline 2 extends into the flue gas conveying pipeline 1. The end of the desulfurizing agent conveying pipeline 2 is rotatably connected to a rotary powder spraying pipe 15 through a rotary joint 14. Nozzles 16 are arranged on the rotary powder spraying pipe 15. A rotating shaft 19 is rotatably arranged at the central position of the flow stabilizer plate 18, and blades 17 are installed on the rotating shaft 19;
[0018] The fine desulfurization mechanism includes a flue gas conveying pipeline 1, an inverted U-shaped flue gas conveying pipe 5 and a fine desulfurization tank 12. The inverted U-shaped flue gas conveying pipe 5 is arranged inside the fine desulfurization tank 12. One end of the inverted U-shaped flue gas conveying pipe 5 is communicated with the flue gas conveying pipeline 1, and the other end of the inverted U-shaped flue gas conveying pipe 5 extends to the bottom of the fine desulfurization tank 12. A liquid discharge pipe 13 is arranged at the bottom of the fine desulfurization tank 12. A sealing cover 7 is arranged at the top of the fine desulfurization tank 12. A liquid inlet pipe 8 and an exhaust pipe 10 are arranged on the sealing cover 7. The inside of the fine desulfurization tank 12 is filled with desulfurization liquid 11.
[0019] One end of the inverted U-shaped flue gas conveying pipe 5 extending to the bottom of the fine desulfurization tank 12 is provided with a flue gas distribution pipe 51, and a number of flue gas outlet holes 52 are opened on the flue gas distribution pipe 51.
[0020] The working process of the present utility model is as follows: The flue gas from the ground coke oven dedusting station flows along the flue gas conveying pipeline 1 into the primary desulfurization area 4. The fan 3 is started to convey the fine desulfurizer powder in the desulfurizer conveying pipeline 2 into the rotary powder spraying pipe 15. The rotary joint 14 is fixedly connected to the rotary powder spraying pipe 15, and the rotary joint 14 is rotatably connected to the end of the desulfurizer conveying pipeline 2. Under the action of the fan 3, the fine desulfurizer powder is ejected from the nozzle 16 on the rotary powder spraying pipe 15. At the same time, the rotary powder spraying pipe 15 rotates continuously, so that the fine desulfurizer powder is evenly sprayed in the flue gas conveying pipeline 1 and is fully and evenly mixed with the flue gas in the flue gas conveying pipeline 1. The flue gas and the fine desulfurizer powder flow along the gas flow to the blade 17. The blade 17 is installed on the rotating shaft 19, and the rotating shaft 19 is fixed on the flow stabilizing plate 18. The blade 17 rotates continuously under the action of the gas flow. The rotation of the blade 17 can, on the one hand, crush the fine desulfurizer powder again, so that the fine desulfurizer powder reacts fully with SO2, SO3, etc. in the flue gas. On the other hand, when the blade 17 rotates, it drives the surrounding gas flow to move in a vortex shape, and mixes the fine desulfurizer powder and the sulfur-containing flue gas again to further remove SO2 and SO3 in the flue gas. After the flue gas is buffered in flow velocity by the flow stabilizing plate 18, it flows smoothly along the flue gas conveying pipeline 1 into the fine desulfurization mechanism. Before the flue gas flows into the fine desulfurization mechanism, the drain pipe 13 is closed, the inlet pipe 8 is opened, and the desulfurization liquid 11 flows into the fine desulfurization tank 12 along the inlet pipe 8. The liquid level gauge 6 is observed to ensure that the height of the inverted U-shaped flue gas conveying pipe 5 is higher than the liquid level of the desulfurization liquid 11. The inlet pipe 8 is closed, and the flue gas flows along the flue gas conveying pipeline 1 into the inverted U-shaped flue gas conveying pipe 5 and is discharged from the flue gas outlet holes 52 opened on the flue gas distribution pipe 51 at the end of the inverted U-shaped flue gas conveying pipe 5 and enters the desulfurization liquid 11. After the sulfur-containing gases such as SO2 and SO3 in the flue gas fully react with the desulfurization liquid 11, they are discharged through the exhaust pipe 10. When it is necessary to replace the desulfurization liquid 11, the drain pipe 13 is opened to completely discharge the desulfurization liquid 11 in the fine desulfurization tank 12, and then the drain pipe 13 is closed, the inlet pipe 8 is opened, and the above work is repeated again.
[0021] As Figure 3 shown, six flue gas distribution pipes 51 are evenly distributed outward with the center of the cross-section of the inverted U-shaped flue gas conveying pipe 5 as the center. The flue gas enters the desulfurization liquid 11 from a number of flue gas outlet holes 52 on the six flue gas distribution pipes 51, so that the flue gas is in full and even contact with the desulfurization liquid 11, which not only improves the efficiency of flue gas desulfurization, but also ensures the effect of flue gas desulfurization.
Claims
1. A flue gas desulfurization system for a coke oven ground dust removal station, characterized in that: It includes a flue gas conveying pipeline (1), a primary desulfurization area (4) and a fine desulfurization mechanism. The primary desulfurization area (4) and the fine desulfurization mechanism are arranged in sequence along the flue gas flow direction. The primary desulfurization area (4) is arranged inside the flue gas conveying pipeline (1). Along the flue gas flow direction, a desulfurizer conveying pipeline (2) and a flow stabilizer plate (18) are sequentially arranged in the primary desulfurization area (4). A blower (3) is arranged on the desulfurizer conveying pipeline (2). The end of the desulfurizer conveying pipeline (2) extends into the flue gas conveying pipeline (1). The end of the desulfurizer conveying pipeline (2) is rotatably connected to a rotary powder spraying pipe (15) through a rotary joint (14). Nozzles (16) are arranged on the rotary powder spraying pipe (15). A rotating shaft (19) is rotatably arranged at the central position of the flow stabilizer plate (18), and blades (17) are installed on the rotating shaft (19). The fine desulfurization mechanism includes a flue gas conveying pipeline (1), an inverted U-shaped flue gas conveying pipe (5) and a fine desulfurization tank (12). The inverted U-shaped flue gas conveying pipe (5) is arranged inside the fine desulfurization tank (12). One end of the inverted U-shaped flue gas conveying pipe (5) is communicated with the flue gas conveying pipeline (1), and the other end of the inverted U-shaped flue gas conveying pipe (5) extends to the bottom of the fine desulfurization tank (12). A liquid discharge pipe (13) is arranged at the bottom of the fine desulfurization tank (12). A sealing cover (7) is arranged at the top of the fine desulfurization tank (12). A liquid inlet pipe (8) and an exhaust pipe (10) are arranged on the sealing cover (7). The inside of the fine desulfurization tank (12) is filled with desulfurization liquid (11).
2. The flue gas desulfurization system for the ground dedusting station of a coke oven according to claim 1, characterized in that: A liquid level gauge (6) is arranged on the fine desulfurization tank (12) for monitoring the liquid level height of the desulfurization liquid (11).
3. The flue gas desulfurization system for the ground dust removal station of a coke oven according to claim 1, characterized in that: A liquid inlet pipe control valve (9) is arranged on the liquid inlet pipe (8).
4. The flue gas desulfurization system for the ground dust removal station of a coke oven according to claim 1, characterized in that: One end of the inverted U-shaped flue gas conveying pipe (5) extending to the bottom of the fine desulfurization tank (12) is provided with a flue gas distribution pipe (51), and a number of flue gas outlet holes (52) are opened on the flue gas distribution pipe (51).
5. The flue gas desulfurization system for the ground dust removal station of a coke oven according to claim 4, wherein: The flue gas distribution pipes (51) are evenly distributed 2 to 10 pieces outward with the center of the cross-section of the inverted U-shaped flue gas conveying pipe (5) as the center of the circle.
6. The flue gas desulfurization system for the ground dust removal station of a coke oven according to claim 1, characterized in that: The height of the inverted U-shaped flue gas conveying pipe (5) is higher than the liquid level height of the desulfurization liquid (11).